Composition of customized waterproof and dustproof membrane switch
Time of issue：
Generally speaking, the customized waterproof and dustproof membrane switch is mainly composed of 6 layers of materials, which are panel, surface glue, upper circuit, isolation layer, lower circuit, bottom according to the order from the surface to the inside.
glue. The structure of each layer is described below:
(1) Panel: The panel is the "coat" of the customized waterproof and dustproof membrane switch. On the basis of properly arranging the keys, through different colors, patterns and key shapes, the panel plays a necessary decorative role for the customized waterproof and dustproof membrane switch. The main function of the panel layer is to play the role of marking and keying, so the selected material must have the characteristics of high transparency, high ink adhesion, high elasticity, and anti-folding properties.
(2). Upper circuit and lower circuit: The upper and lower circuits are the electrical components of the customized waterproof and dustproof membrane switch, and are also the "key" of the switch. Their performance directly affects the performance of the switch electrical appliances, mainly due to It is formed by printing a layer of conductive material on the film. The upper and lower circuits play the two electric shock roles necessary for the switch to close, and its thickness is generally within 0.05--0.175MM, and the most common is 0.125MM .
(3) Surface adhesive, isolation layer, and primer: the materials of these three-layer structures are all double-sided adhesives, which have different names due to their different positions in the switch structure. The three layers of double-sided tape have different thicknesses depending on their respective layers. This is mainly determined by the thickness of the customized waterproof and dustproof membrane switch and the operating force of the keys.